But the MMR system doesn't show your skill level at all. I had someone in my game who literally went 1-7 on yasuo and just never plays the champion, and he feeds every single game, but hes in my MMR tier, and my MMR tier is normal for my rank. Explain how this happens? Explain how this person who feeds every game, and I do fairly decent except for off days is in my game, and how that is considered my skill level (I also want to say that this yasuo has a 55% win rate and I have a 43% win rate, and they get carried every game cause their games are with people like me, Their win rate wouldn't skyrocket like this if they were facing players around their win rate and division, but he doesn't, so his winrate is super inflated by facing bronze players because his mmr is through the floor) xD Your fantasy just doesn't exist here, you are actually delusional if you think that someone getting fed in a game is just getting fed, no, they are just an innately better player than the opposing laner.
The problem is, I can lose 5 games, and then autowin 7 in a row, I have done it multiple times when I start getting tired of losing games that are supposed to be "even". The current MMR system is seriously abuseable, It takes 5 losses for your mmr to tank into oblivion and then you just get way easier games. Can you see where the issue with this is? At 40 LP, 5 losses doesn't demote me, at 0 LP, 7 wins promotes me. I'm actually going to do this to get into gold with a 42% win rate (this is pathetic btw). Think about this for a second, do I look like a good enough player to be in gold? Absolutely not, not a damn chance do I belong in gold, but I'm going to get there as soon as I win two games.
And this is the heavy issue I have, I went on a 6 game win streak (literally carried every game) and then got 3 unwinnable games. The game punished me for doing well. And it is purely because of the MMR system and the fact it is a horrible system for matchmaking fair games. The only difficulty I have in climbing is getting to the MMR level where 5 losses in a row doesn't demote me. As soon as this happens, I get to autoclimb a division because all 7 games I'm in a game I DON'T BELONG IN.